A Comparative Study on Two Typical Schemes for Securing Spatial-Temporal Top-k Queries in Two-Tiered Mobile Wireless Sensor Networks

Sensors

Xingjian Liu¹  Junbin Liang²  Wenpeng Ma³  Chuanda Qi³  Xingpo Ma³  Yin Li³  Ran Li³ 

[1] Henan Xinyang Senior High School, Xinyang 464000, China;School of Computer and Electronic Information, Guangxi University, Nanning 530004, China;School of Computer and Information Technology, Xinyang Normal University, Xinyang 464000, China;

关键词: mobile edge computing;    two-tiered mobile wireless sensor networks;    top-k query;    integrity preservation;   

DOI  :  10.3390/s18030871

来源: DOAJ

【 摘 要 】

A novel network paradigm of mobile edge computing, namely TMWSNs (two-tiered mobile wireless sensor networks), has just been proposed by researchers in recent years for its high scalability and robustness. However, only a few works have considered the security of TMWSNs. In fact, the storage nodes, which are located at the upper layer of TMWSNs, are prone to being attacked by the adversaries because they play a key role in bridging both the sensor nodes and the sink, which may lead to the disclosure of all data stored on them as well as some other potentially devastating results. In this paper, we make a comparative study on two typical schemes, EVTopk and VTMSN, which have been proposed recently for securing Top-k queries in TMWSNs, through both theoretical analysis and extensive simulations, aiming at finding out their disadvantages and advancements. We find that both schemes unsatisfactorily raise communication costs. Specifically, the extra communication cost brought about by transmitting the proof information uses up more than 40% of the total communication cost between the sensor nodes and the storage nodes, and 80% of that between the storage nodes and the sink. We discuss the corresponding reasons and present our suggestions, hoping that it will inspire the researchers researching this subject.

【 授权许可】

Unknown